Adjustable metal window screen



Patented Nov. 12, 1929 UNITED STA PAUL J. A. HAMMILL, F HAMILTON, ONTARIO, CANADA, ASSIGNOR OF ONE-THIRD TO IRA GREEN AND ONE-THIRD T0 V cannon rc'ron r. H. GREEN,

BOTH 0F HAMILTON,

ADJUSTABLE METAL WINDOW SCREEN Application filed October 13, 1928. Serial No. 312,371.

This invention relates'to window screens and has special reference to a window screen having an adjustable frame.

One important object of the invention is to provide an improved construction'of window screen frame adapted to be arran ed to fit any size or proportions of rectangu ar sash openings.

A second important object of the invention is to provide an improved form of screen frame adjustable to suit rectangular sash openings of different sizes.

A third important object of the invention is to provide an improved form of expansible 1 screen frame arranged in a novel manner to fit around and hold a desired size of screen web.

With the above and other objects in view as will be hereinafter apparent, the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings and specifically claimed. I

In the accompanying drawings likecharacters of reference indicate like parts 1n the several views, and:

.Figure 1 is a front elevation of the improved screen frame in use with a web of screen wire.

Figure 2 is a section on the line 2-2 of Figure 1. I

Figure 3 is a section on the line 3-3 of Figure 1.

Figure 4 is a section on the line 4-4: of

Figure 1.

Figure 5 is a front elevation of the screen frame in modified form.

In the embodiment of the invention herein illustrated it will be seen that the screen frame consists of four corner members 10 made of bendable metal and channel shaped in cross section. Slidable in these corner members are the extension members 11 of similar channel cross section to the members 10 but slightly therein as clearly shown in Figure 3. Each channel set consists, as clearly shown in Figure 3, of a thin metal strip formed to provide a web and a pair of inwardly extendsmaller so that they may fiting flat flanges of considerably eater width thanthe web. One of these nges lies at right angles to the web so that the frame may fit singly in the angle of a window frame as shown in Figure 4. The other flange extends from the web at an acute angle. Thereby the five edges of the flanges of the member 10 engage the screen material 15. The channels are contracted at their open edges as also shown in the cross sectional views so that the members 11 have a s ecies of tubular telescopic connection wit the members 10. The members 10 are provided with spaced openings 12 in their flanges and similarly spaced openings 13 are provided in the members 11 so that bolts and nuts 14 may be used to lock the members 11 in adjusted telescopic relation to the members 10. Moreover, these bolts and nuts may be used to draw the open edges of the members 10 and 11 together so as to grip the screen wire web 15 and hold it firmly in position in the frame thus making soldering or other fastening unnecessary. On the members 10 are provided brackets 16 having. feet 17 provided with suitable openings for screws 18 by means of which the screen may be detachably secured to the window casing 19.

'With this construction it is obvious that any desired length of members 11 may be used for the breadth and height of the screen and that these extension members may be so adjusted in the members 10 as'to cause the frame to fit properly in any rectangular sash opening.

There has thus been rovided a simple and eflicient device of t e kind described and for the purpose specified.

It is obvious that minor changes may be made in the form and construction of the invention without departing from the material spirit thereof. It is not, therefore, desired to confine the invention to the exact form herein shown and described, but it is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

1. In an adjustable screen frame,

a set of corner pieces having angularly disposed arms of channel cross section, extension pieces con- 'necting the corner pieces by twos and having their ends slidable in. said corner pieces, said 5 extension pieces being, ofchannel cross section, said channel sections each having a web and a pair of flanges'of greater width than the web, one of said flanges extending at right angles to the web and the other flange extend- 1 ing at an acute angle to said web whereby the channels formed by the extension and corner pieces having their flanges inclined toward each other to form contracted mouths and preventing lateral disengagement of theextension pieces from the corner pieces, said corner and extension pieces being provided with spaced bolt openings for selective registration as the frame is adjusted, and bolts passing through the registering openings to hold the frame in adjusted position.

2. In an adjustable screen frame, a set of corner pieces having angularly disposed arms of channel cross section, extension pieces connecting the corner pieces by twos and having their ends slidable in said corner pieces, said extension pieces being of channel cross section, the channels formed by the extension 1 and corner pieces having their flanges inclined toward each other to form contracted months and preventing lateral disengagement of the extension pieces from'the corner pieces, said corner and extension pieces being pro vided with spaced bolt openings for selective registration as the frame is adjusted, and

bolts passing through the registering openings to hold the frame in adjusted position; in combination with a screen web. having its edge portions fitting between the flanges of the channels and clamped thereby by the ac- 40 tion of said bolts.

In testimony whereof I have aflixed my signature. PAUL J. A; HAMMILL. 

